Dry-burning-resistant heater for aquarium

Abstract

The utility model relates to a dry heating prevention heater for an aquarium, which comprises a shell, a water inlet is arranged on the upper portion of the shell, a water storage cavity is arranged in the shell and positioned below the water inlet, and a heating body is mounted in the water storage cavity. By adopting the heater, the water storage cavity in the shell is communicated with the water body of the aquarium only through the water inlet, so that the water storage cavity forms a relatively independent space, and the heating body is arranged in the water storage cavity and is positioned below the water inlet; a user does not need to directly power off the heater or wait for a long time after power off, and only needs to vertically and upwards take out the heater from the water body, so that the heating body can be continuously immersed in the water in the water storage cavity and cannot be directly exposed in the air, the use is convenient, the dry burning phenomenon of the heating body due to the fact that the user does not pay attention to the water can be reduced, and the service life of the heater is prolonged. Security accidents such as skin burn are reduced, operation is safer, and the service life of the heater is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of electric heaters, in particular to a dry - burning prevention heater for an aquarium. Background Technique

[0002] Nowadays, more and more families are equipped with aquariums for raising aquatic organisms. Since most aquatic organisms have strict requirements for the adaptation range of water temperature, too high or too low temperature will have an adverse impact on the growth and development of aquatic organisms. To maintain the water temperature in the aquarium, a water heating rod is usually used to change and control the water temperature in the aquarium to meet the requirements for raising aquatic organisms. The existing heating rods are usually of single - tube or double - tube structure, and their main bodies adopt the form of an isolation shell to form a water - isolated closed space inside the tube; a heating element is arranged inside the tube, and the heating element is generally an electric heating wire, which is electrically connected to a temperature controller, and the working state of the heating element is controlled by the temperature controller. When using the above - mentioned heating rod, since it is necessary to avoid direct contact between its high - temperature surface during operation and an object, a supporting suction cup or other fixing device is usually used to hang the heating rod on the side of the aquarium, immerse the heating rod in the water body of the aquarium, and then supply power to it through an external power cord, so that the heating element generates heat, and the heat is transferred to the water body outside the isolation shell through the isolation shell on the surface of the heating rod, thereby realizing the heating of the water body in the aquarium. However, when the existing heating rod is in use, it usually does not have a dry - burning prevention function. If the surface of the heating rod corresponding to the heating element part is directly exposed to the air when it is at a high temperature and separated from the water body, due to the hindrance of air to heat conduction, when the surface of the heating rod is not in a fluid medium, the heat generated by the heating element cannot be transferred to surrounding objects in time, resulting in too high a surface temperature of the heating rod, which will damage the service life of the heating rod and may also lead to safety accidents such as the heating rod burning out or short - circuiting.

[0003] Therefore, when using the above-mentioned heating rod, the user needs to always pay attention to the precautions for using the heating rod to avoid dry burning. For example, when heating, the surface of the heating rod corresponding to the heating element part should be completely immersed in water, and direct contact between the surface of the heating rod and objects should be avoided. Also, when the heating rod needs to be taken out of the water due to cleaning the aquarium, changing the water in the aquarium, or not using the heating rod, the power supply of the heating rod needs to be cut off in advance for a period of time to allow the surface temperature of the heating rod to decrease before taking it out of the water. The above precautions are rather cumbersome and inconvenient for the user. Since in daily use, it is usually necessary to take the heating rod out of the water for a short time, such as directly adjusting the position of the heating rod in the aquarium or moving the heating rod from one aquarium to another. In these cases, if the user does not pay attention to the precautions or for more convenient operation, after the heating rod is powered off, they may not wait for the surface of the heating rod to cool down completely and immediately or quickly take it out of the water, or even operate it without powering off. In the above situations, the surface of the heating rod will still be exposed to the air at a relatively high temperature for a period of time, causing the phenomenon of dry burning of the heating rod. Even if the time is not long, it will still affect its service life and may cause safety accidents such as skin burns. Utility Model Content

[0004] The purpose of the present utility model is to provide an anti-dry-burning heater for an aquarium, which can play an anti-dry-burning role when separated from the water body of the aquarium, is convenient to use, safe to operate, and can ensure its service life.

[0005] An anti-dry-burning heater for an aquarium includes a housing. An inlet is provided at the upper part of the housing, and a water storage cavity is arranged inside the housing. The water storage cavity is located below the inlet, and a heating element is installed in the water storage cavity.

[0006] Optionally, the housing is in the shape of a circular cylinder, and a flow-through cavity is formed in the middle of it. Inlets are provided on both the upper part of the inner wall and the outer wall of the housing.

[0007] Optionally, an electric fan is installed in the flow-through cavity in the middle of the housing.

[0008] Optionally, a water pump is installed in the flow-through cavity in the middle of the housing.

[0009] Optionally, a filter screen is installed at the mouth of the housing cylinder.

[0010] Optionally, a plurality of heating elements are arranged in the water storage cavity, which are distributed at intervals along the circular cylinder wall in the water storage cavity, and the working state of each heating element can be controlled independently.

[0011] Optionally, an annular cylindrical outer cover is sleeved outside the housing. An inner water inlet is provided inside the outer cover. The position of the inner water inlet matches the position of the water inlet at the upper part of the outer wall of the housing. A plurality of outer water inlets corresponding to the orientation of the inner water inlet are provided on the outer side of the outer cover. A cavity communicating with the inner water inlet and the outer water inlets is provided inside the outer cover.

[0012] Optionally, a switchable drain port communicating with the water storage cavity is provided at the bottom of the housing.

[0013] Optionally, a base is connected to the bottom of the housing through a support rod.

[0014] Optionally, the water inlet is formed by arranging a plurality of filter small holes in an array.

[0015] For the dry - burning - proof heater for an aquarium according to the present utility model, the water storage cavity inside its housing is only communicated with the water body of the aquarium through the water inlet, so that the water storage cavity forms a relatively independent space. When in use, the heater is placed in the aquarium so that the water body submerges the housing. The water inlet allows water to enter the water storage cavity, making the heating element placed in the water storage cavity completely submerged in water. Then the power is turned on to make the heating element work. The heating element fully contacts and heats a part of the water body in the water storage cavity. The water inside and outside the water storage cavity can enter or flow out of the water storage cavity through the water inlet, so that the water body of the aquarium is gradually heated to the required temperature. When the heater is vertically taken out of the water body, the water at the water inlet and the space above it in the housing will flow out from the water inlet. Since the water storage cavity is located below the water inlet, the water in the water storage cavity in the space below the water inlet can remain in the water storage cavity. Since the heating element is installed in the water storage cavity and is also below the water inlet, the water body remaining in the water storage cavity can continue to submerge the heating element, enabling the heat on the surface of the heating element to continue to be timely transferred to the water body, avoiding the temperature on the surface of the heating element from being too high and causing damage to the heating element, thus playing a role in preventing dry burning.

[0016] Therefore, when using the anti-dry-burning heater for an aquarium, its heating element is located in a relatively independent water storage cavity and below the water inlet. When the heater is vertically taken out of the water body, the heating element can continue to be completely immersed in the water and will not be directly exposed to the air, thus preventing dry burning. When the heater only needs to be taken out of the water body for a short time, for example, when adjusting the placement position of the heater in the aquarium or moving the heater from one aquarium to another, the user does not need to directly cut off the power supply of the heater or wait for a long time after cutting off the power. Just vertically take out the heater from the water body, and the heating element can continue to be immersed in the water, reducing the situation of dry burning caused by the heating element being continuously exposed to the air at a high temperature. Then, when using, just put the heater back into the water, which can play the role of preventing dry burning and is convenient to use. The heating element at a high temperature can continuously be immersed in the water in the water storage cavity and will not directly come into high-temperature contact with objects outside the cavity, reducing the dry-burning phenomenon of the heating element due to the user's inattention, reducing the damage to the heating element and the occurrence of safety accidents such as skin burns, making the operation safer and ensuring the service life of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the external structure of an anti-dry-burning heater for an aquarium according to the present utility model;

[0019] Figure 2 is a schematic diagram of the longitudinal sectional structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the external structure of the present utility model from another perspective;

[0021] Figure 4 is Figure 1 a schematic sectional view along the A-A direction;

[0022] Figure 5 is a schematic diagram of the external structure of the present utility model after being sleeved with an outer cover;

[0023] Figure 6 is a partial schematic diagram of the longitudinal sectional structure of the present utility model.

[0024] Reference numerals: 1 - outer shell, 2 - heating element, 3 - water inlet, 31 - first water inlet, 32 - second water inlet, 4 - water storage cavity, 5 - drain port, 51 - piston, 6 - electric fan, 61 - connecting rod, 7 - base, 71 - support rod, 8 - filter net, 9 - outer cover, 91 - inner water port, 92 - outer water port, 93 - cavity, 10 - power cord, 11 - temperature control display, 12 - temperature controller, 13 - power adapter, 14 - overcurrent cavity. Detailed Implementation Modes

[0025] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. The embodiments described by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0026] It should be noted that if there are directional indications involved in the embodiments of the present utility model (such as up, down, left, right, front, back, top, bottom, end, inside, outside, horizontal, vertical, counterclockwise, clockwise, radial, axial, etc.), then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings), and are only for the convenience of describing the present utility model and simplifying the description. If this specific posture changes, then the directional indications will also change accordingly. Therefore, it should not be construed as a limitation to the present utility model. In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "installation" and "connection" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, terms such as "first" and "second" are used to distinguish one element from another element, and do not have sequentiality and importance; the meaning of "a plurality" is two or more, unless otherwise clearly and specifically limited.

[0027] As Figures 1 to 4 shown, a dry-run prevention heater for an aquarium provided by the present utility model includes a housing 1. An inlet 3 is provided at the upper part of the housing 1. A water storage cavity 4 is arranged inside the housing 1, and the water storage cavity 4 is located below the inlet 3. A heating element 2 is installed in the water storage cavity 4. Among them, the water storage cavity 4 is only communicated with the water body of the aquarium through the inlet 3, so that the water storage cavity 4 forms a relatively independent space. The water storage cavity 4 is located below the inlet 3, so that the water storage cavity 4 can hold the water flowing in from the inlet 3. When the heater vertically leaves the water body in the aquarium, the water in the water storage cavity 4 in the space below the inlet 3 will be able to remain in the water storage cavity 4.

[0028] In this solution, the shape of the housing 1 can be a common shape in the art as long as it ensures the above structure; the space at and above the inlet 3 in the housing 1 can be combined with the water storage cavity 4 below the inlet 3 to form an integral inner cavity structure, as Figure 2As shown, when the heater is taken out of the water body, the water in the inner cavity that submerges the part of the water inlet 3 will flow out of the water inlet 3 to the outside, and the water in the storage cavity 4, which is the space below the water inlet 3, can remain in the heater. Of course, the specific setting method of the internal structure of the outer shell 1 is not limited to the above structure. As long as it is ensured that there is a water inlet 3 provided at its upper part and a storage cavity 4 is provided inside, and the storage cavity 4 is located below the water inlet 3, when the heater is taken out of the water body, the water in the storage cavity 4 below the water inlet 3 can remain in the heater to submerge the heating element 2.

[0029] The heating element 2 provided in the storage cavity 4 can heat the water body entering the storage cavity 4. The water body in the storage cavity 4 can be in full contact with the heating element 2 and can heat up at a relatively fast speed during the heating work of the heating element 2 to reach the set temperature. Among them, the heating element 2 can use the common heating device structures in the field, such as heating resistance wire type, metal sheet type, heating rod type, etc. By connecting the power supply to supply power to the heating element 2, the heating element 2 generates heat and works. In this solution, the heating element 2 is not limited to the style in the drawings, as long as it can heat up the water body in contact with it during the heating work. Fixing parts for fixing the heating element 2 in the storage cavity 4 can be provided in the storage cavity 4 to keep the heating element 2 in the installed position in the storage cavity 4 and prevent the heating element 2 from shifting. The fixing parts can be such that by setting fixing grooves, fixing holes, etc. adapted to the heating element 2, the heating element 2 passes through and is fixed therein, or the heating element 2 can be connected and fixed to the wall of the storage cavity 4 through connecting rods, etc. The specific form is not limited here, as long as it can play a role in keeping the heating element 2 fixed.

[0030] During use, the heater is placed in the aquarium so that the water body submerges the outer shell 1. The water inlet 3 allows water to enter the storage cavity 4, so that the heating element 2 placed in the storage cavity 4 is completely submerged by water. Then the power supply is connected to make the heating element 2 work. The heating element 2 is in full contact with the local water body in the storage cavity 4 and heats it. The water inside and outside the storage cavity 4 can enter or flow out of the storage cavity 4 through the water inlet 3, so that the water body in the aquarium is gradually heated to the required temperature.

[0031] When the heater is taken out vertically upward from the water body to leave the water, the water at the water inlet 3 and the space above it in the outer shell 1 will flow out of the water inlet 3. Since the storage cavity 4 is located below the water inlet 3, the water in the storage cavity 4, which is the space below the water inlet 3, will be able to remain in the storage cavity 4. Since the heating element 2 is installed in the storage cavity 4 and is also located below the water inlet 3, the water body remaining in the storage cavity 4 can continue to submerge the heating element 2, so that the heat on the surface of the heating element 2 can continue to be transferred to the water body in a timely manner, avoiding damage to the heating element 2 due to the too high temperature on the surface of the heating element 2, thus playing a role in preventing dry burning. For the convenience of taking out, a handle for grasping can also be provided near the top of the outer shell 1 to enable the user to take out the heater from the aquarium more conveniently.

[0032] Therefore, when using the anti-dry-burning heater for an aquarium, the heating element 2 is located in a relatively independent water storage cavity 4 and is below the water inlet 3. When the heater is vertically taken out of the water body, the heating element 2 can continue to be completely immersed in the water, will not be directly exposed to the air, and will not cause dry-burning phenomenon. When the heater only needs to be taken out of the water body for a short time, for example, when adjusting the placement position of the heater in the aquarium, or moving the heater from one aquarium to another, etc., the user does not need to directly cut off the power of the heater or wait for a long time after cutting off the power. Just vertically take out the heater from the water body, the heating element 2 can continue to be immersed in the water, reducing the situation that the heating element 2 is continuously exposed to the air at a high temperature and causing dry-burning phenomenon. Then put the heater into the water when using it, thus playing a role in preventing dry-burning, and it is convenient to use; the heating element 2 at a high temperature can continuously be immersed in the water in the water storage cavity 4, will not directly contact with objects outside the cavity at a high temperature, can reduce the dry-burning phenomenon of the heating element 2 caused by the user's inattention, reduce the damage to the heating element 2 and the occurrence of safety accidents such as burning the skin, make the operation safer, and ensure the service life of the heater.

[0033] Specifically, referring to Figure 1 and Figure 2 for the structure, the outer shell 1 is in a ring-shaped cylindrical shape, and an overcurrent cavity 14 is formed in the middle thereof, and water inlets are provided on both the upper parts of the inner wall and the outer wall of the outer shell. For the convenience of description, as Figure 2 shown, the water inlet 3 may include a first water inlet 31 provided on the upper part of the inner wall of the outer shell 1 and a second water inlet 32 provided on the upper part of the outer wall of the outer shell 1. Both the first water inlet 31 and the second water inlet 32 are communicated with the water storage cavity 4 in the outer shell 1, so that the water in the aquarium can only flow into and out of the water storage cavity 4 of the outer shell 1 through the first water inlet 31 on the upper part of the inner wall of the outer shell 1 and the second water inlet 32 on the upper part of the outer wall of the outer shell 1, making the water storage cavity 4 form a relatively independent space. Since the water storage cavity 4 is below the first water inlet 31 and the second water inlet 32, and the heating element 2 is installed in the water storage cavity 4, it is ensured that when the heater is vertically taken out of the water body, the water at the first water inlet 31, the second water inlet 32 and the space above them will flow out from the first water inlet 31 and the second water inlet 32, while the water in the space below the first water inlet 31 and the second water inlet 32 will be able to remain in the water storage cavity 4. Since the heating element 2 is below the first water inlet 31 and the second water inlet 32, the water body retained in the water storage cavity 4 can continue to immerse the heating element 2, enabling the heat on the surface of the heating element 2 to continue to be transferred to the water body in time, avoiding the temperature on the surface of the heating element 2 being too high and causing damage to the heating element 2, thus playing a role in preventing dry-burning.

[0034] In addition, as Figure 2As shown, since the outer shell 1 adopts a cylindrical structure, the internal space thereof is relatively small, and the space of the water storage cavity 4 is also relatively small, resulting in less water flowing into the water storage cavity 4. The water body in the water storage cavity 4 can fully contact with the heating element 2, and can heat up at a faster speed during the heating operation of the heating element 2 to reach the set temperature. The water inside and outside the water storage cavity 4 can enter or flow out of the water storage cavity 4 through the first water inlet 31 and the second water inlet 32, so as to gradually heat up the water body of the aquarium to the required temperature. The outer shell 1 adopts a cylindrical structure, which has a simple structure, can make the placement position more flexible, and the amount of water contained in its water storage cavity 4 is relatively small, making its total weight smaller, facilitating the user to place the heater at any position in the aquarium and take it out of the aquarium.

[0035] In this solution, the power cord 10 of the heater can pass through the water storage cavity 4 inside the outer shell 1 and be electrically connected to the heating element 2. Power is supplied to each heating element 2 in the water storage cavity 4 through the power cord 10 to make it perform the heating operation. The power cord 10 can enter the water storage cavity 4 from the top of the outer shell 1 in a manner that can be referred to Figure 1 so that the heater can be conveniently placed in the aquarium without interfering with the operation of the heater. Of course, the position where the power cord 10 enters the water storage cavity 4 can also be set to other positions, which can be set according to the actual situation. To supply power to the heating element 2 more safely, as Figure 1 and Figure 2 shown, a power adapter 13 electrically connected to the power cord 10 can also be provided on the power cord 10. The output voltage of the power adapter 13 can adopt the safe voltage values commonly used in daily life to supply power to the heating element 2, such as 3.7V, 5V, 9V, 12V, 36V, etc. The output voltages of the power adapter 13 are all within the human body safe voltage range of 36V, so it can avoid the safety hazards brought by too high voltage to the user and ensure the safe use of the heater. Of course, the power cord 10 can be directly connected to the mains power to supply power to the heating element 2.

[0036] To facilitate the user to control the temperature of the heater, a control circuit electrically connected to the power cord 10 and a temperature controller 12 communicatively connected to the control circuit can be provided in the heater. The control circuit can adjust and control the heating temperature of the heating element 2 according to the temperature set in the temperature controller 12, so as to control the temperature of heating the water body. Its specific structure can adopt the control circuit structure commonly used in the field. In this solution, there is no limitation on the position where the control circuit is installed in the heater, as long as it can ensure that the control circuit can control the heating temperature of the heating element 2. The control circuit can be sealed at the top of the outer shell 1 or installed outside the outer shell 1 to avoid interference and damage to the control circuit caused by the water body and ensure the normal operation of the control circuit.

[0037] Refer to Figure 1 and Figure 2, for further facilitating the use by users, the temperature controller 12 can be set on the part of the power cord 10 extending outside the aquarium. Its specific style is not limited to the style in the attached drawings and can be a button type, a rotary knob type, a toggle type, etc. For easy operation, as Figure 1 and Figure 2 shown, a main switch for controlling the on / off of the power cord 10 is also provided on the temperature controller 12.

[0038] In addition, for facilitating the measurement of the water temperature, a thermometer (not shown in the figure) can be installed on the top of the housing 1; for facilitating the users to observe the water temperature value of the aquarium in real time from the outside, reference can be made to Figure 1 , and a temperature control display 11 for displaying the temperature value measured by the thermometer and communicatively connected to the thermometer can also be provided on the top of the housing 1.

[0039] Optionally, as Figure 2 , Figure 4As shown, an electric fan 6 is installed in the current-carrying cavity 14 in the middle of the outer shell 1. The electric fan 6 can be connected to the inner wall of the outer shell 1 through a connecting rod 61. Since the current-carrying cavity 14 of the outer shell 1 is a cylindrical inner wall space, it is mainly communicated with the water body space outside the outer shell 1 through the openings above and below the annular cylinder outer shell 1. The space inside the current-carrying cavity 14 is relatively narrow and airtight, resulting in relatively insufficient water flow mobility in its space. Therefore, an electric fan 6 is installed in the current-carrying cavity 14 in the middle of the outer shell 1. The thrust provided by the electric fan 6 can drive the water body around it to form a water flow, which cooperates with the cylindrical inner wall space of the current-carrying cavity 14 to promote the formation of a water flow with a faster flow rate in the current-carrying cavity 14. Furthermore, the overall mobility of the water body in the aquarium is stronger, and the water flows inside and outside the cylinder can form a better circular flow. The above mobility can maintain the oxygen content and the uniformity of the temperature distribution of the water in the aquarium, make the water temperature in the aquarium more uniform, and promote the more uniform distribution of the oxygen content in the water, thereby ensuring that the aquatic organisms in the aquarium can be in a suitable living state and avoiding the adverse effects on the survival of aquatic organisms caused by local hypoxia in the water or large temperature differences in different directions in the water. Moreover, through the power provided by the electric fan 6, the water mobility is increased, which can promote the water body inside and outside the water storage cavity 4 to flow into or out of the water storage cavity 4 from the water inlet 3 faster, and can reduce the situation that the heating element 2 repeatedly heats the water body with insufficient mobility in the water storage cavity 4 due to the relatively airtight space of the water storage cavity 4 and cannot be discharged from the water storage cavity 4 in time. The water body in the water storage cavity 4 can flow faster and meet the water body outside the cavity, so that the heat carried by it can be transferred to other positions of the aquarium faster, and the water bodies in other positions can be heated up faster, thereby increasing the heating speed of the overall water temperature in the aquarium, having a higher heating efficiency. The faster heating process can also reduce the situation that the water body in the aquarium has a large local water temperature difference for a long time, and to a certain extent avoid the adverse situation that the hot water in the water storage cavity 4 is not discharged in time and accumulates for too long, interfering with the working state of the heating element 2 and affecting the service life of the heating element 2.

[0040] In the above manner, Figure 2The electric fan 6 therein can be replaced with a water pump, that is, a water pump is installed in the flow-through cavity 14 in the middle of the housing 1 and can be connected to the inner wall of the housing 1 through a connecting rod 61. The water pump provides the power to push the water flow, and the same effect can be achieved, which will not be elaborated here. In this implementation, the power direction provided by the electric fan 6 or the water pump to the water body can be adjusted. For example, the electric fan 6 or the water pump provides upward power to the water body. The water flow below the housing 1 can be sucked by the electric fan 6 or the water pump into the cylindrical inner wall space of the flow-through cavity 14, so that the water body in the space below the heater can better flow to the vicinity of the water inlet 3 at the upper part of the housing 1 to flow into the water storage cavity 4 for heating, making the heating of all aspects of the water body more sufficient. The electric fan 6 or the water pump can be connected to the inner wall of the housing 1 through the connecting rod 61. The number, connection position, and connection method of the connecting rod 61 are not limited. Three connecting rods 61 can be set in the manner of Figure 4 shown therein, or other methods can also be adopted, as long as it can ensure that the electric fan 6 or the water pump is fixedly installed on the inner wall of the housing 1. The above device for pushing the water flow is not limited to the electric fan 6 or the water pump, and can also be other devices, as long as it can play the same role, which will not be specifically described here.

[0041] Optionally, a filter screen 8 is provided at the barrel opening of the housing 1. The barrel opening of the housing 1 includes the barrel opening at the top of the housing 1 and the barrel opening at the bottom of the housing 1. The installation and setting of the filter screen 8 at the barrel opening of the housing 1 can be referred to Figure 3 shown therein. Using the filter screen 8 can prevent aquatic organisms in the aquarium or larger debris in the water body from entering the flow-through cavity 14 through the barrel opening at the top or bottom of the housing 1, preventing aquatic organisms or larger debris from causing blockage, entanglement and other obstructive effects on the first water inlet 31 on the inner wall and the electric fan 6 or the water pump in the flow-through cavity 14, and ensuring the smooth flow of the water body in the space of the flow-through cavity 14 and the normal operation of the electric fan 6 or the water pump.

[0042] Optionally, a plurality of heating elements 2 are arranged in the water storage cavity 4 of the housing 1, and they are distributed at intervals along the annular barrel wall in the water storage cavity 4. Each heating element 2 can be independently controlled in its working state. Arranging a plurality of heating elements 2 in the cylindrical water storage cavity 4 of the housing 1 makes the overall contact area between the water in the water storage cavity 4 and the heating elements 2 larger, the heating efficiency of the local water body in the water storage cavity 4 higher, its heating rate faster, and the structure of the water storage cavity 4 is adapted to the cylindrical housing 1. Distributing the heating elements 2 at intervals along the annular barrel wall in the water storage cavity 4 can ensure that the water in the water storage cavity 4 is heated more evenly. This scheme can be referred to Figure 4 shown. A total of six heating elements 2 are arranged in the water storage cavity 4, and each heating element 2 is arranged at the same angular interval in the water storage cavity 4. Of course, the number of heating elements 2 in the water storage cavity 4 is not limited to Figure 4The situation shown can be any other arbitrary quantity, and its installation position and spacing size within the water storage cavity 4 can be set or adjusted according to the actual situation. For example, increasing or decreasing the number of heating elements 2 to change the heating efficiency, etc. This solution will not be elaborated. Each heating element 2 can be individually controlled in its working state by an external controller. For example, when the heater is placed near the side of the aquarium, a part of the heating elements 2 close to the side of the aquarium can be controlled to stop heating, so that it is not necessary to directly heat the relatively small amount of water near the side of the aquarium. Only the other part of the heating elements 2 far from the side of the aquarium needs to keep heating, which can save energy and improve the heating efficiency.

[0043] A plurality of first water inlets 31 can be provided at the upper part of the inner wall of the housing 1. The first water inlets 31 are spaced from each other and evenly distributed at the upper part of the inner wall of the housing 1. As Figure 2 shown, it can enable the water flow in the flow-through cavity 14 of the cylindrical housing 1 to flow into or out of the water storage cavity 4 through more first water inlets 31, improving the water inlet and outlet efficiency of the housing 1. In addition, each first water inlet 31 can cooperate with an electric fan 6 or a water pump that provides thrust to the water in the flow-through cavity 14, ensuring that under the thrust of the electric fan 6 or the water pump on the surrounding water body, the water flow near the bottom of the housing 1 can flow into the water storage cavity 4 through more first water inlets 31, further improving the water inlet efficiency of the water storage cavity 4, which is beneficial to further promoting the circulation of the water flow. This solution does not specifically limit the specific quantity and spacing size of the first water inlets 31, which can be set according to the actual situation.

[0044] A plurality of second water inlets 32 can be provided at the upper part of the outer wall of the housing 1. The second water inlets 32 are spaced from each other and evenly distributed at the upper part of the outer wall of the housing 1. According to Figure 1 shown, setting a plurality of second water inlets 32 at a certain interval can improve the water inlet and outlet efficiency of the water storage cavity 4, and cooperate with the electric fan 6 or the water pump. The heated water flow flowing out from the second water inlets 32 can flow towards the periphery of the housing 1, and the heat is transferred to other positions of the water body along with the water flow towards the periphery of the housing 1, which can further promote the circulation of the water flow outside the housing 1, making the heating efficiency of the water body in the aquarium higher and the heating rate faster. The interval distribution can make the formed water flow circulate more evenly, and the water temperature can rise evenly. This solution does not specifically limit the specific quantity and spacing size of the second water inlets 32, which can be set according to the actual situation.

[0045] Optionally, as Figure 5 and Figure 6As shown, an annular cylindrical outer cover 9 is sleeved outside the outer shell 1. An inner water inlet 91 is provided on the inner side of the outer cover 9, and the position of the inner water inlet 91 matches the position of the second water inlet 32 on the outer wall of the outer shell 1. A plurality of outer water inlets 92 corresponding to the orientation of the inner water inlet 91 are provided on the outer side of the outer cover 9, and a cavity 93 communicating with the inner water inlet 91 and the outer water inlets 92 is provided inside the outer cover 9. During use, the method in Figure 6 can be adopted. The outer cover 9 is sleeved around the outer shell 1 through a suitable clamping structure, and then the heater is placed in the aquarium so that the water body submerges the outer shell 1. The first water inlet 31 allows water to enter the water storage cavity 4, and the water also flows into the cavity 93 of the outer cover 9 through the outer water inlets 92. Since the position of the second water inlet 32 matches the position of the inner water inlet 91, and the water storage cavity 4 is also communicated with the cavity 93, finally the water body fills the water storage cavity 4 and the cavity 93. When the heater is heating, the water in the water storage cavity 4 of the outer shell 1 can flow out of the water storage cavity 4 from the second water inlet 32 at the upper part of the outer wall of the outer shell 1 after being heated by the heating element 2. At this time, the position of the second water inlet 32 matches the position of the inner water inlet 91 on the inner side of the outer cover 9. Therefore, the heated water flow can flow into the cavity 93 of the outer cover 9 and then flow out to the periphery of the heater from the outer water inlets 92. Through the above structure, since the position of the inner water inlet 91 matches the position of the second water inlet 32 on the outer wall of the outer shell 1, and a plurality of outer water inlets 92 are provided at the positions corresponding to the inner water inlet 91 on the outer side of the outer cover 9, the water body flowing out to the periphery of the heater at the position corresponding to the second water inlet 32 can be discharged by the plurality of outer water inlets 92 arranged at the same orientation, so that the heated water body flowing out from the second water inlet 32 can be further dispersed, and the water flow discharged outward is more uniform, and the water temperature in the aquarium can rise more evenly. The method of sleeving the outer cover 9 around the outer shell 1 can adopt Figure 6 's clamping structure. The outer cover 9 is fixedly sleeved with the outer shell 1 by fitting and engaging the clamping block on the outer cover 9 with the clamping groove on the outer wall of the outer shell 1. Of course, other methods can also be used for installation, as long as the outer cover 9 can be fixedly sleeved with the outer shell 1 when needed to play the same role.

[0046] The specific number and spacing size of the above-mentioned outer water inlets 92 provided on the outer side of the outer cover 9 are not specifically limited in this solution and are not limited to Figure 5 's setting method and can be set according to the actual situation. Reference can be made to Figure 5 and Figure 6 's method. The plurality of outer water inlets provided on the outer side of the outer cover corresponding to the orientation of the inner water inlet 91 are all vertically distributed, so that the dispersion in each orientation is more uniform and the aesthetic degree is ensured. In addition, the outer water inlets 92 can be set to be formed by an array of a plurality of filter holes to prevent aquatic organisms or larger sundries from entering the cavity 93 of the outer cover 9 and causing internal blockage.

[0047] Optionally, to facilitate draining the water in the water storage chamber 4, as Figure 2 and Figure 3 shown, a switchable drain port 5 communicating with the water storage chamber 4 is provided at the bottom of the outer shell 1. By providing the drain port 5 at the bottom of the outer shell 1, when the heater is in normal use, the drain port 5 is in a closed state. When the heater is vertically taken out of the water body, the water in the water storage chamber 4 can continue to be retained, and the heating element 2 remains immersed in the water. When the heater needs to be away from the water body for a long time, such as during cleaning work, long-term storage, or transportation, first ensure that the heating element 2 is powered off and its surface temperature has dropped to a suitable temperature, and then make the drain port 5 in an open state, so that the accumulated water in the water storage chamber 4 completely flows out of the water storage chamber 4 from the drain port 5 at the bottom, so as to facilitate subsequent processing or storage of the heater. When the heater needs to be used, pre-set the drain port 5 to a closed state and then place it in the water body of the aquarium. The switch of the drain port 5 can be as Figure 2 shown, set as a piston type. The drain port 5 is blocked by a piston 51 connected to the bottom of the outer shell 1 to achieve the closing of the drain port 5. When the drain port 5 needs to be opened, pull out the piston 51 from the drain port 5 to make the drain port 5 in an open state. In addition, the switch of the drain port 5 can also be set as a rotary type, a toggle type or other common switch structures.

[0048] Optionally, as Figure 1 and Figure 3 shown, the bottom of the outer shell 1 is connected to a base 7 through a support rod 71, so as to facilitate the stable placement of the heater in the aquarium, increase the optional placement positions of the heater in the aquarium, and leave enough water space below the outer shell 1, which is beneficial to maintaining better fluidity of the water body below the outer shell 1. The above structure can cooperate with the electric fan 6 or the water pump, so that the water body below the outer shell 1 can better flow into the flow-through cavity 14 of the outer shell 1 to form a faster flowing water flow. A common fixing device such as a fixed suction cup can be further provided at the bottom of the base 7. The base 7 can be fixed at the required placement position in the aquarium through the fixing and adsorption action of the fixed suction cup and other devices, ensuring that the heater will not be toppled due to water flow disturbance or impact of aquatic organisms, improving its placement stability, and keeping it Figure 1 in the vertical placement form in

[0049] Optionally, the water inlet 3 is formed by a plurality of filter holes arranged in an array. Refer to Figure 1 and Figure 2As shown, both the first water inlet 31 and the second water inlet 32 are formed by arranging a plurality of filter holes in an array. With this structure, it is possible to prevent aquatic organisms in the aquarium or larger debris in the water body from entering the water storage cavity 4 of the outer shell 1 through the water inlet 3, preventing aquatic organisms or larger debris from affecting the heating operation of the heating element 2 in the water storage cavity 4 or causing blockage of the channels in the water storage cavity 4, and ensuring the smooth flow of water in the water storage cavity 4.

[0050] As described above, only some embodiments of the present invention are provided, and the protection scope of the present invention is not limited thereby. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention. Therefore, non-substantive changes or replacements made by those skilled in the art based on the present invention still fall within the protection scope of the present invention.

Claims

1. An anti-dry-burning heater for an aquarium, characterized in that: It includes a housing (1). An inlet (3) is provided at the upper part of the housing (1). A water storage cavity (4) is arranged inside the housing (1), and the water storage cavity (4) is located below the inlet (3). A heating element (2) is installed in the water storage cavity (4).

2. The anti-dry-burning heater for an aquarium according to claim 1, characterized in that: The housing (1) is in a ring-shaped cylindrical shape, and a flow-through cavity (14) is formed in the middle thereof. Inlets (3) are provided at the upper parts of the inner wall and the outer wall of the housing (1).

3. The anti-dry-burning heater for aquarium according to claim 2, characterized in that: An electric fan (6) is installed in the flow-through cavity (14) in the middle of the housing (1).

4. The anti-dry burning heater for aquarium according to claim 2, characterized in that: A water pump is installed in the flow-through cavity (14) in the middle of the housing (1).

5. The dry-burning prevention heater for an aquarium according to claim 2, wherein: A filter screen (8) is installed at the opening of the housing (1).

6. The dry-run prevention heater for aquarium according to claim 2, characterized in that: A plurality of heating elements (2) are arranged in the water storage cavity (4), and they are spaced along the circumferential wall of the water storage cavity (4). Each heating element (2) can independently control its working state.

7. The anti-dry-burning heater for an aquarium according to claim 2, characterized in that: An outer cover (9) in a ring-shaped cylindrical shape is sleeved outside the housing (1). An inner side water inlet (91) is provided on the inner side of the outer cover (9), and the position of the inner side water inlet (91) matches the position of the inlet (3) at the upper part of the outer wall of the housing (1). A plurality of outer side water inlets (92) corresponding to the orientation of the inner side water inlet (91) are provided on the outer side of the outer cover (9). A cavity (93) communicating with the inner side water inlet (91) and the outer side water inlet (92) is arranged inside the outer cover (9).

8. The dry-burning prevention heater for aquarium according to any one of claims 1 to 7, characterized in that: A switchable drain port (5) communicating with the water storage cavity (4) is provided at the bottom of the housing (1).

9. The dry - burning prevention heater for an aquarium according to any one of claims 1 to 7, characterized in that: The bottom of the housing (1) is connected to a base (7) through a support rod (71).

10. The anti-dry-burning heater for aquarium according to any one of claims 1 to 7, characterized in that: The inlet (3) is formed by an array of a plurality of filter holes.

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